Why not just set everything up in a registration, style, right voice, right layer, left voice, tempo, variation, synch start, intro, etc.

Now merely select the registration, which has all the information stored within, press Freeze, press any key and begin playing. As the song is ending, press Freeze again and you're ready to select the next registration, MFD, midi file, etc. Not a lot of button pushing, but of course, this would depend on how you set up your registrations.

Gary